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Article Dans Une Revue Physics Letters B Année : 2016

Dijet production in $\sqrt{s}=7$ TeV $pp$ collisions with large rapidity gaps at the ATLAS experiment

G. Aad (1) , M.K. Ayoub (2) , A. Bassalat (2) , C. Bécot (2) , S. Binet (2) , C. Bourdarios (2) , D. Delgove (2) , J-B. de Vivie De Regie (2) , L. Duflot (2) , M. Escalier (2) , L. Fayard (2) , D. Fournier (2) , E.L. Gkougkousis (2) , J-F. Grivaz (2) , T. Guillemin (2) , F. Hariri (2) , S. Henrot-Versille (2) , J. Hrivnac (2) , L. Iconomidou-Fayard (2) , M. Kado (2) , A. Lounis (2) , N. Makovec (2) , N. Morange (2) , C. Nellist , P. Petroff (2) , L. Poggioli (2) , P. Puzo (2) , A. Renaud (2) , D. Rousseau (2) , G. Rybkin (2) , A.C. Schaffer (2) , E. Scifo (2) , L. Serin (2) , S. Simion (2) , R. Tanaka (2) , D. Zerwas (2) , Zhongkai Zhang (2) , Y. Zhao (2) , G. Rahal (3) , S. Albrand (4) , J. Collot (4) , S. Crépé-Renaudin (4) , P.A. Delsart (4) , C. Gabaldon (4) , M.H. Genest (4) , J.Y. Hostachy (4) , F. Ledroit-Guillon (4) , A. Lleres (4) , A. Lucotte (4) , F. Malek (4) , C. Monini (4) , J. Stark (4) , B. Trocmé (4) , M. Wu (4) , Z. Barnovska (5) , N. Berger (5) , M. Delmastro (5) , L. Di Ciaccio (5) , S. Elles (5) , C. Goy (5) , T. Hryn’ova (5) , S. Jézéquel (5) , I. Koletsou (5) , R. Lafaye (5) , Jérémy Lévêque (5) , N. Massol (5) , P. Mastrandea (5) , G. Sauvage (5) , E. Sauvan (5) , O. Simard (5) , T. Todorov (5) , I. Wingerter-Seez (5) , E. Yatsenko (5) , L. Alio (1) , M. Barbero (1) , Y. Coadou (1) , C. Diaconu (1) , Sara Diglio (1) , F. Djama (1) , O. Duccu (1) , L. Feligioni (1) , J. Gao (1) , G.D. Hallewell (1) , F. Hubaut (1) , S.J. Kahn (1) , E. B. F. G. Knoops (1) , E. Le Guirriec (1) , J. Liu (1) , K. Liu (1) , D. Madaffari (1) , K. Mochizuki (1) , E. Monnier (1) , S. Muanza (1) , Y. Nagai (1) , E. Nagy (1) , P. Pralavorio (1) , A. Rozanov (1) , T. Serre (1) , M. Talby (1) , R.E. Ticse Torres (1) , E. Tiouchichine (1) , S. Tisserant (1) , J. Toth (1) , F. Touchard (1) , L. Vacavant (1) , D. Boumediene (6) , E. Busato (6) , D. Calvet (6) , S. Calvet (6) , J. Donini (6) , E. Dubreuil (6) , G. Gilles (6) , Ph. Gris (6) , H. Liao (6) , R. Madar (6) , D. Pallin (6) , S.M. Romano Saez (6) , C. Santoni (6) , D. Simon (6) , T. Theveneaux-Pelzer (1) , F. Vazeille (6)
G. Aad
C. Nellist
  • Fonction : Auteur
D. Rousseau
N. Berger
C. Goy
T. Hryn’ova
Y. Coadou
S. Calvet

Résumé

A $6.8 \ {\rm nb^{-1}}$ sample of $pp$ collision data collected under low-luminosity conditions at $\sqrt{s} = 7$ TeV by the ATLAS detector at the Large Hadron Collider is used to study diffractive dijet production. Events containing at least two jets with $p_\mathrm{T} > 20$ GeV are selected and analysed in terms of variables which discriminate between diffractive and non-diffractive processes. Cross sections are measured differentially in $\Delta\eta^F$, the size of the observable forward region of pseudorapidity which is devoid of hadronic activity, and in an estimator, $\tilde{\xi}$, of the fractional momentum loss of the proton assuming single diffractive dissociation ($pp \rightarrow pX$). Model comparisons indicate a dominant non-diffractive contribution up to moderately large $\Delta\eta^F$ and small $\tilde{\xi}$, with a diffractive contribution which is significant at the highest $\Delta\eta^F$ and the lowest $\tilde{\xi}$. The rapidity-gap survival probability is estimated from comparisons of the data in this latter region with predictions based on diffractive parton distribution functions.

Dates et versions

in2p3-01223673 , version 1 (03-11-2015)

Identifiants

Citer

G. Aad, M.K. Ayoub, A. Bassalat, C. Bécot, S. Binet, et al.. Dijet production in $\sqrt{s}=7$ TeV $pp$ collisions with large rapidity gaps at the ATLAS experiment. Physics Letters B, 2016, 754, pp.214-234. ⟨10.1016/j.physletb.2016.01.028⟩. ⟨in2p3-01223673⟩
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